Barber-chair.



No. 644,526. Patented Feb. '27; I900. J. B. LOWRY;

BARBER CHAIR.

(Application filed July 31, 1899.)

2 Sheets-Sheet I.

(No Model.)

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2 Sheets-8heet 2.

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J. B. LO-WRY.

BARBER CHAIR.

(Application filed July 31, 1899.)

I'l l II IIIIIIH WII I \I I I Nrrnn STATES ATENT Brion.

J OIIN B. LOWRY, OF ST. LOUIS, MISSOURI, ASSIGNOR TO THE AUGUST KERNBARBER SUPPLY COMPANY, OF SAME PLACE.

BARBER-CHAIR.

SPECIFICATION forming part of Letters Patent No. 644,526, dated February27, 1900.

Application filed July 31, 1899. Serial No. 725,600. (No model.)

To aZZ whom it may concern;

Be it known that I, JOHN B. LOWBY, a citizen of the United States,residing at the city of St. Louis, in the'State of Missouri, haveinvented certain new and useful Improvements in Barbers Chairs, of whichthe following is a full, clear, and exact description, reference beinghad to the accompanying drawings, forming part of this specification.

This invention relates to a barber-chair the seat of which can beraisedand lowered, the raising being eifected by a mechanical device, whilethe seat is maintained in its elevated position by confined liquid andthe seat is lowered by permitting the liquid to pass from one chamberinto another.

The object of my invention is to construct a barber-chair the seat ofwhich can be raised and lowered and to construct such a chair in amanner that will insure a perfect working of the parts with a minimumamount of force being exerted by the operator.

My invention consists in features of novelty hereinafter fullydescribed, and, pointed out in the claims.

Figure I is a side elevation of my improved chair. Fig. II is anenlarged detail side view with the seat portion of the chair removed.Fig. III is an enlarged top view with the seat portion of the chairremoved. Fig. 1V is a horizontal section of the cylinder-head, taken online IV IV, Fig.VIII. Fig.V is a horizontal section of the cylinderportion, taken on line V V, Fig. VII. Fig. VI- is a horizontal sectionof the cylinder portion, taken on line VI VI, Fig.VII. Figs.VII and VIIIare vertical longitudinal sections of the cylinder portion, taken online VII VIII, Fig. III, the two figures showing the parts in differentpositions. Fig. IX is a detail vertical section of the cylinder-head.

1 represents the base of the chair, provided with supporting-legs 2 andwhich is formed hollow to receive an outer cylinder 3, within which isan inner cylinder 4.

5 represents the seat portion of the chair, which is secured to the head6 of the cylinder 4, the head being provided with a flange 7 to receivethe seat 5. The cylinder 3 is formed with a closed bottom and has ahorizontal flange S at its upper end that rests upon the top of thebase 1. The cylinder has a vertical flange 9 extending above the flange8.

10 is a rack that is suspended on the flange 9 of the cylinder 3 bymeans of a notched head 11 on the rack that engages the flange 9. Theback of the rack is cut away to form shoulders 12 and 13. The shoulder12 bears against the inner face of the cylinder 3, therack fitting in aslot 14, formed in one side of the cylinder 4. The head 6 of thecylinder 4 is made hollow, as shown in Figs.VII and VIII, and journaledin this head is a shaft 15, provided at one end with a hand-lever 16. Onthe shaft 15 are an eccentric 17 and an eccentric 18, the eccentric 17receiving the strap 19 of a pawl or dog 20 and the eccentric 18receiving the strap 21 of a bar 22. When the parts are in the positionshown in Fig. VII, the dog or pawl 20 is moved out of engagement withthe rack 10 by means of a spring 23, secured to the dog or pawl and thefree end of which when the parts are moved to the position shown in Fig.VII comes in contact with the inner wall of the head of the cylinder 4and forces the lower end of the dog out of engagement with the rack. Asthe parts are moved from the position shown in Fig. VII toward theposition shown in Fig. VIII the spring 23 moves away from contact withthe head of the cylinder 4 and a spring 24 on the other side of the dogor pawl comes against the head of the cylinder, as shown in Fig. VIII,and throws the lower end of the dog or pawl into engagement with therack 10, and the continued movement of the shaft 15 will cause thecylinder 4, which carries the chairseat, to be elevated. As thiselevation takes place oil or other liquid that is contained in thecylinder 4 passes through a flap or other valve 25, located in thebottom of the cylinder 4, into the cylinder 3 beneath the cylinder 4,and as the movement of the cylinder 4 ceases the valve 25 closes andimprisons the oil in the chamber beneath the cylinder 4, thus holdingthe cylinder and the chair-seat in their elevated position. If when thechair has been raised one notch it is desired to raise it farther, theshaft 15 is turned in the opposite direction to cause the pawl 20 toengage the next notch in the rack, and then by turning the shaft in thefirst-mentioned direction the cylinder and chair-seat are caused to beraised the distance of another tooth of the rack, and thus the seat ofthe chair may be raised to any elevation desired.

\Vhen it is desired to lower the chair-seat, the parts are moved to theposition shown in Fig. VII, which causes a projection 26 on the arm 22to engage the head of a spring-supported rod 27, the lower end 28 ofwhich is made non-circular and passes through a circular hole 29 in thebottom of the cylinder 4. As the parts are brought to the position shownin Fig. VII the projection 26 comes against the end of the rod 27 andforces the lower end of the rod against a flap-valve 30, that closes thehole 29, and by forcing the valve open, as shown in Fig. VII, permitsthe oil to flow from the chamber beneath the cylinder into the cylinderthrough the hole 29, and thus the seat will descend as fast as the oilpasses through the hole 29. \Vhen the chair-seat has descended to thedesired elevation, the shaft is turned slightly to cause the projection26 to leave the head of the rod 27, and the rod being automaticallyraised by its spring permits the valve 30 to close and the descent ofthe chair-seat will be arrested. It will thus be seen that while amechanical force is employed for lifting the chair-seat the seat ismaintained in its elevated position as it is raised and after it hasbeen raised by means of the liquid, and when it is desired to lower theseat the liquid is simply allowed to pass from the cylinder 3 into thecylinder 4 by a slight movement of the lever 10.

In order to look the chair-seat from rotation when it is desired to doso, I secure a fiat spring 32 to a shoulder or ledge 33, formed on therack to one side of the teeth, as shown in Fig. V. The free end of thisspring presses against the arm or bar 22 when the bar is forced forwardby its inclined end 34 coming against a lug 35 on the side of thecylinder I. As the bar 22 presses against the spring it causes the upperend of the rack to bite against the upper end of the outer cylinder, theshoulder 12 acting as a fulcrum, thus preventing the cylinder 4 fromturning. When the dog 20 engages the rack, the upper end of the rack inlike manner grips the outer cylinder, the seat and inner cylinder thusbeing prevented from swinging around. When it is desired to permit theseat to swing around, it can be done by moving the shaft 15 to aposition that will cause the dog 20 to be disengaged from the teeth ofthe rack and which will not be sufficient to bring the bar 22 intoengagement with the spring 32, a position midway between that shown inFig. VII and that shown in Fig. VIII. hen the shaft is moved to thismidway position, the rack will hang loosely on the flange 9 of thecylinder 3, and the chair-seat can be swung around to any desiredposition.

The object of the shoulder 13 is to prevent the lower end of the rackbeing moved too far undersudden jerks on the lever 10, which might breakthe upper end of the rack.

37 represents a set-screw fitting in the upper end of the rack and theinner end of which is designed-to bear against the flange 9 for thepurpose of taking up the wear between the rack and the cylinder 3.

On the shaft 15 is a collar 38, provided with a projection 39, adaptedto come in contact with stops 40 on the inside of the head of thecylinder 4 to limit the movement of the shaft.

\Vhile I have described my invention as applied to barber-chairs, yet itis evident that it might be used in connection with dental or otherchairs.

I claim as my invention- 1. In a barber-chair, the combination of anouter cylinder, aninner cylinder to which the seat of the chair issecured, a valve carried by the inner cylinder to permit a liquid toflow from the inner to the outer cylinder when the inner cylinder israised, a rack hung upon the outer cylinder and fitting in a slot in theinner cylinder, a rock-shaft journaled in the head of the innercylinder, a dog actuated from the rock-shaft, and springs for movingsaid dog into and out of contact with said rack, substantially as setforth.

2. Ina barber-chair, the combination of an outer cylinder, an innercylinder provided with a valve to permit a liquid to flow from the innerto the outer cylinder when the inner cylinder is raised, a rack hungupon the outer cylinder and which fits in a slot in the inner cylinder,a rock-shaft, a dog actuated from the rock-shaft, springs for forcingsaid dog into and out of engagement with the rack when said shaft isturned, an arm actuated from said rock-shaft and having an inclinedlower end adapted to bear against a projection on the inner cylinder,and a spring secured to said rack and adapted to be engaged by said arm,substantially as and for the purpose set forth.

3. In a barber-chair, the combination of an outer cylinder, an innercylinder to which the chair-seat is secured, a rack suspended from theouter cylinder and fitting in a slot in the inner cylinder, a rock-shaftand a dog actuated from the rock-shaft whereby when the dog is caused toengage said rack the chairseat is elevated and the rack is pressedagainst the outer cylinder to hold the seat from rotation, substantiallyas set forth.

4:. In a barber-chair, the combination of an outer cylinder, an innercylinder, a rack carrying a spring and suspended from the outer cylinderand fitting in a slot in the inner cylinder, a rock-shaft, a dog forengaging said rack actuated from said rock-shaft, and an arm actuatedfrom the shaft and provided with an inclined end, a projection on theinner cylinder with which the inclined end is adapted to engage wherebythe arm is forced against the spring carried by the rack, substantiallyas set forth.

5. In a barber-chair, the combination of an outer cylinder, an innercylinder to which the chair-seat is secured having a valve in the bottomthereof, a rack hung from the outer cylinder and fitting in a slot inthe inner cylinder, a rock-shaft, a dog actuated from the rock-shaft,and which is adapted to engage said rack, a spring-supported rod, and anarm actuated from the rock-shaft and which is adapted to engage thespring-supported rod to open the valve in the bottom of the innercylinder, substantially as and for the purpose set forth.

6. In a barber-chair, the combination of an. outer cylinder, an innercylinder, a rack carrying a spring and suspended from the outer cylinderand fitting in a slot in the inner cylinder and having a cut-awayportion in its back to form a shoulder 12 that bears against the outercylinder, a rock-shaft, a dog actuated from the rock-shaft which isadapted to engage said rack, and an arm actuated from the rock-shaft andmeans whereby the arm is moved toward said rack so as to engage thespring carried by the rack, substantially as and for the purpose setforth.

7. In a barber-chair, the combination of an outer cylinder, an innercylinder, a rack carrying a spring and suspended from the outer cylinderand fitting in a slot in the inner cylinder and having cut-away portionsin its back to form shoulders 12 and 13, a rock-shaft, a dog actuatedfrom the rock-shaft and which is adapted to engage said rack, and an armactuated from the rock-shaft and arranged to move toward said rack so asto engage the spring carried by the rack; said shoulder 12 acting as afulcrum and the shoulder 13 as a stop, substantially as and for thepurpose set forth.

8. In a barber-chair, the combination of an outer cylinder, an innercylinder to which the seat is secured, a rock-shaft having an eccentric,a dog carried by the eccentric on the rock-shaft, a rack with which saiddog engages hung upon the outer cylinder and a valve located in thebottom of the inner cylinder whereby, when the seat is raisedmechanically, it is supported by liquid and held to any adjustment,substantially as set forth.

9. In a barber-chair, the combination of an inner cylinder, an outercylinder, valves located in the bottom of the inner cylinder,

a rack, a rock-shaft having eccentrics, a dog carried by one of theeccentrics on the rockshaft and adapted to engage said rack, an armcarried by the other eccentric on the rock-shaft and means whereby thearm is adapted toopen one of the valves in the bot tom of the innercylinder to permit the inner cylinder to descend,substantially as setforth.

JOHN B. LOWRY.

In presence of- E. S. KNIGHT, N. V. ALEXANDER.

